JPS5640852A - Electrophotographic device - Google Patents

Electrophotographic device

Info

Publication number
JPS5640852A
JPS5640852A JP11749879A JP11749879A JPS5640852A JP S5640852 A JPS5640852 A JP S5640852A JP 11749879 A JP11749879 A JP 11749879A JP 11749879 A JP11749879 A JP 11749879A JP S5640852 A JPS5640852 A JP S5640852A
Authority
JP
Japan
Prior art keywords
speed
pressure
drum
photoreceptor
supporting component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11749879A
Other languages
Japanese (ja)
Inventor
Tsutomu Toyono
Masaki Nakaoka
Kyo Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP11749879A priority Critical patent/JPS5640852A/en
Publication of JPS5640852A publication Critical patent/JPS5640852A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fixing For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To prevent the deterioration of the photoreceptor, by detecting whether the rotational speed of the pressure fixing roller which gives the pressure to the toner image supporting component is slower than the fixed speed or zero. CONSTITUTION:The pressure fixing roller pairs 8 and 9 are provided, and furthermore this roller pair and the photosensitive drum 1 are driven by the same motor 2. And the detecting means consisting of the light source 13 and the photodetector 14 detects whether the roller pairs 8 and 9 which give the pressure to the toner supporting component have the rolational speed higher than the fixed speed or the zero speed. Then based on the detection signal, the corona discharge given from the corona discharger 6 to be supplied to the drum 1 is stopped by the command to be given to the high-voltage generating device 7 via the counter 15 and the comparator 17. As a result, the surface potential of the drum 1 can be prevented from becoming extraordinarily high or low or affecting negatively the photoreceptor.
JP11749879A 1979-09-12 1979-09-12 Electrophotographic device Pending JPS5640852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11749879A JPS5640852A (en) 1979-09-12 1979-09-12 Electrophotographic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11749879A JPS5640852A (en) 1979-09-12 1979-09-12 Electrophotographic device

Publications (1)

Publication Number Publication Date
JPS5640852A true JPS5640852A (en) 1981-04-17

Family

ID=14713217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11749879A Pending JPS5640852A (en) 1979-09-12 1979-09-12 Electrophotographic device

Country Status (1)

Country Link
JP (1) JPS5640852A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6255590A (en) * 1985-08-30 1987-03-11 サントル・スイス・デレクトロニク・エ・ド・ミクロテクニク・ソシエテ・アノニム Precision positioning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6255590A (en) * 1985-08-30 1987-03-11 サントル・スイス・デレクトロニク・エ・ド・ミクロテクニク・ソシエテ・アノニム Precision positioning device

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